1) (x-5)²-x²=0 2) (x+2)²=(x+4)² 3) 1/4x²-36=0

Question

1) (x-5)²-x²=0 2) (x+2)²=(x+4)² 3) 1/4x²-36=0

Answer 1

1) (x-5)^2-x^2=0
x^2-10x+25-x^2=0
-10+25=0
-10=-25
x= 2,5

Comments

2) x^2+4x+4=x^2+8x+16 ; 4x+4=8x+16 ; 4x+4-8x-16=0; -4x-12=0 ; x+3=0 ; x= -3

Answer 2

Надеюсь все понятно

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